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| Property | Parameter | Description |
|---|---|---|
| Product Name | High Strength Steel Bars for Construction | Deformed and plain reinforcing steel bars for structural and civil engineering applications |
| Material Grade | HRB400 / HRB500 / HRB600 (GB); Grade 60 / Grade 75 (ASTM A615); B500B / B500C (EN 10080) | International equivalent grades covering Chinese, American, and European standards |
| Standard Compliance | GB/T 1499.2-2018; ASTM A615/A615M; EN 10080; JIS G3112; BS 4449 | Compliant with major international construction and structural steel standards |
| Chemical Composition (C) | ≤ 0.25% | Carbon content controlled to ensure weldability and ductility |
| Chemical Composition (Mn) | 0.60% – 1.60% | Manganese enhances strength and hardenability |
| Chemical Composition (Si) | 0.20% – 0.80% | Silicon improves strength and deoxidation |
| Chemical Composition (P / S) | P ≤ 0.045%; S ≤ 0.045% | Low phosphorus and sulfur for improved toughness and weldability |
| Tensile Strength | 540 – 730 MPa (HRB400); 630 – 800 MPa (HRB500) | Per GB/T 1499.2-2018; Grade 60 min. 620 MPa per ASTM A615 |
| Yield Strength | 400 MPa min. (HRB400); 500 MPa min. (HRB500); 415 MPa min. (ASTM Grade 60) | Guaranteed minimum yield strength for structural load-bearing performance |
| Elongation | ≥ 16% (HRB400); ≥ 15% (HRB500); ≥ 7% (ASTM A615 Grade 60) | Minimum elongation at fracture ensuring ductile behavior under seismic and dynamic loads |
| Diameter / Size Range | 6 mm – 50 mm (diameter); Length: 6 m, 9 m, 12 m or custom | Available in standard and custom cut lengths; deformed rib profile per applicable standard |
| Surface Finish | Hot-rolled deformed (ribbed) or plain round surface | Deformed bars provide superior bond strength with concrete; plain bars for specific structural uses |
| Application | Reinforced concrete structures, bridges, tunnels, high-rise buildings, foundations, retaining walls | Widely used in civil, infrastructure, and seismic-resistant construction projects |
| Certification | ISO 9001:2015; CE Marking (EN 10080); Mill Test Certificate (MTC) per EN 10204 3.1 | Third-party inspection available; certificates provided with each shipment |
| Packaging | Bundled in 2–5 MT bundles; wire-tied; seaworthy export packing available | Standard bundle weight customizable per buyer requirement; labeling per standard |
| MOQ | 25 MT per grade/size | Mixed size orders accepted; FOB, CFR, CIF terms available |
Initial documentation delay resolved — quality was fine
Ordered 40 tonnes of 32 mm Grade 60 bars for a Florida coastal foundation project requiring full ASTM A615 compliance documentation. The bars themselves tested well — yield strength 431 MPa, elongation 14.5% — but the MTC package initially arrived without the heat number cross-reference our inspector required. This caused a two-day hold on our pour schedule. After raising the issue, the supplier emailed the corrected documentation within four hours and followed up with a process improvement confirmation. Product quality was not in question. Documentation process has since been addressed and we are considering a follow-up order.
Ordered 40 tonnes of 32 mm Grade 60 bars for a Florida coastal foundation project requiring full ASTM A615 compliance documentation. The bars themselves tested well — yield strength 431 MPa, elongation 14.5% — but the MTC package initially arrived without the heat number cross-reference our inspector required. This caused a two-day hold on our pour schedule. After raising the issue, the supplier emailed the corrected documentation within four hours and followed up with a process improvement confirmation. Product quality was not in question. Documentation process has since been addressed and we are considering a follow-up order.
